KNX & Building Automation 2026: Trends for the Mid-Market

Building automation was long a matter for new builds and corporate headquarters. That is changing. Rising energy costs, building-energy regulation and the simple wish to stop operating a building through twenty separate islands are bringing the topic into mid-sized companies — into hotels, production halls, administrative buildings and sports venues. Anyone planning in 2026 should know a few developments before committing to a system.

At the centre still sits KNX, the open standard for building systems technology. Unlike proprietary island solutions, devices from different manufacturers speak the same language here. That is not an academic detail: it decides whether a company can still get replacement devices in ten years, or whether it is chained to a single vendor. The KNX Association keeps the standard open, and that is exactly what makes it interesting for long-lived buildings.

Energy is the driver, not the gimmick

The most common trigger for an automation project today is not comfort but the energy bill. An administrative building that coordinates heating, ventilation and shading instead of letting each trade run on its own saves measurably — depending on the starting point, double-digit percentages of heat demand. Building-energy legislation such as Germany's GEG adds further pressure: anyone who has to renovate anyway is well advised to build the control in at the same time.

Time control is decisive here. A large part of the saving comes not from exotic sensors but from things running when they are needed — and not otherwise. This is exactly where theoretical saving potential becomes real saving: precise, traceable switching times instead of crude continuous operation. In a stadium project we built a graphical interface for this with GiraConnect, which makes the time switches of a Gira HomeServer operable instead of hiding them in raw switch points.

Open standards beat closed ecosystems

In 2026 the line between building automation and consumer smart home continues to blur. Matter and KNX IoT bring IP-based communication into building technology, and suddenly devices that used to be separate worlds talk to each other. That is tempting — and dangerous if done carelessly.

Our recommendation to mid-sized companies is sober: the load-bearing infrastructure — heating, lighting, access, security — belongs on a robust, open standard such as KNX. Consumer devices via Matter may sit on top, but not in the critical layer. Whoever makes door control depend on the availability of a cloud service has bought comfort at the price of a risk that bites back on a bad day. How to separate such layers cleanly is part of our IT consulting & digitalisation work.

The building network is a security topic

What many underestimate: as soon as building technology speaks IP, it is an IT security topic. A compromised ventilation actuator is not a comfort problem but a way in. Security authorities now explicitly treat building automation as part of operational technology that must be secured.

The most effective measure is unspectacular: segmentation. Building control belongs in its own network, separated from the office LAN and certainly from the open internet. In particularly sensitive environments we go a step further and run the control air-gapped — fully offline, with the only connection going to the local control server. That sounds like effort, but for stadiums, production plants or critical infrastructure it is often the only variant that passes the in-house security review. More on this is in our IT security & cybersecurity practice.

Retrofit instead of new build

The largest market is not in new construction but in existing stock. A nineties office building can be brought to a usable automation level today with manageable effort — KNX can be retrofitted, and there are pragmatic ways to bridge old installation and new operation. That bridge is often the real work: the hardware is in place, but it needs to become operable without ripping everything out.

This is where the value of custom software shows. An installation is rarely a textbook case. The question is not "which product do I buy" but "how do I make the existing control so operable that my team understands it". A slim, tailored interface on top of an existing installation is frequently more valuable than an expensive off-the-shelf complete system — a pattern we see again and again in software development.

What we advise companies in 2026

Three things we take from our projects. First: bet on open standards so the building outlives its first vendor. Second: treat the control as what it technically is — a network that must be secured. Third: take operation seriously. The best installation is useless if nobody can operate it without a manual.

Building automation in the mid-market is no longer a prestige project but a business decision with a clear energy and security dimension. Whoever plans it as such — open, segmented and operable — builds something that still holds up in ten years.

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